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https://issues.apache.org/jira/browse/STORM-391?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14252850#comment-14252850
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ASF GitHub Bot commented on STORM-391:
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Github user harshach commented on the pull request:
https://github.com/apache/storm/pull/338#issuecomment-67593515
@Lewuathe Sorry looks like I am not clear . From above discussion it seems
you want to check kafka zookeeper /topics path to check if a topic exists or
not. As per previous discussion I would like to see if you can use kafka api
exceptions instead of relying zookeeper path for checking if topic exists. Is
this the approach you are taking ?
> KafkaSpout to await for the topic
> ---------------------------------
>
> Key: STORM-391
> URL: https://issues.apache.org/jira/browse/STORM-391
> Project: Apache Storm
> Issue Type: Improvement
> Affects Versions: 0.9.2-incubating
> Reporter: Alexey Raga
> Assignee: Kai Sasaki
> Labels: features
>
> When topic does not yet exist and the consumer is asked to consume from it,
> the default behaviour for Kafka heigh-level consumer is to "await" for the
> topic without a failure.
> KafkaSpout currently fails trying to get the partition information about the
> topic that does not exist.
> It may be a good idea to have the same common behaviour in KafkaSpout and it
> can probably be implemented through the zookeeper watchers: if topic does not
> exist, then set up a watcher and don't do anything until it yields.
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